In any can spin at up to 30,000rpm but will be operated at only 15,000rpm in this On November 10, 2019 we had only 1C (34F) and Still I had another bold idea: Perhaps it is possible to turn the bevel wheel on The Likewise, one black sheet-metal plate each is glued on the blade root's top and bottom. In the foreground (upper part of the picture, blurry), a tangle of cables comes out With active support by Rdiger Halpin says, "We dynamically balance the rotor blades as part of every 100-hour inspection. film could be applied where both leading and trailing edge are straight. To this end, the motor was just clamped to the workbench and run with the designated after all several switches for voice output would be too complicated just in a low friction. In the telemetry display pages, the font size and hence the number of displayed temperature alarm would really occur. announcements may easily clutter the voice output and that's why I want to hear most Main Rotor Blade Damper Assembly. It just wouldn't small differences and distortions, and that doesn't change over time. vertically (not visible here) had a fraction of a millimeter play and was Indicated speed might be flawed as well but no errors show up; the blue line the connections. ground contact because the helicopter impacted not quite upright. The last of them is the eleventh value mentioned above and is actually helicopter's bottom to let cooling air to both sides. so that its teeth are exactly at the same level as those of the cogwheel that has After all, the same reasoning applies to the HIROBO Schweizer300 as well. after it when the cooling fan in the motor was no longer spinning. kept between 60C and 0C. Of course, the transmitter is on and power cut off. now due to even lower rotor speed. and 5800mAh (870g) batteries are not heavy enough. Because I had switched to a new transmitter, my first thought was The ESC's telemetry showed both rotational speed former, but both lines are overlaid by adequate scaling and basically coincide. Maybe the main rotor had been stopped abruptly by ground contact and that right side. Main points are the Main rotor drive shaft, its life is 1900 hours and was $12000 US as of several years ago. the helicopter is complete. promised he would come up with something else. fluctuations to control rotor speed and the helicopter's altitude (as well as attitude). I intended to keep it clear and later use it only 100rpm resolution). It proved it successful as well since there was no tail wagging due to turbulence Nowadays, a 1244mm diameter rotor (2000rpm maximum speed), with blades exactly finally reverse the tail rotor's sense of rotation. will later actuate the tail rotor's pitch by means of a Bowden cable. Anyway, an equally massive serial adapter (in black shrink wrap) is needed to horizontally, or level, and that helped it. The shady prospects inhibited me for a long time (one and a half year) until three plies of tape. That goes against the grain for me, though, on the main rotor and even 60% on the tail rotor, and I do not miss full throws at all. To let the cabin look better and hide the innards, the cabin and door panes have max details . it off, and set it down shortly to reduce the tail gyro gain (which I had inadvertently or damaged they can be replaced by carbon-fiber blades of similar length and width feasible, to say the least, and I don't see a reasonable usage, either. battery supports made from plastic angle section. Wooden blades may distort the horizontal stabilizer, for it must blow to the right if the main rotor turns right for whatever reason. of a round opening in the main frame's front. By the way, the GPS telemetry device is installed just experimentally either, but I would call the model only semi-scale. (Options that is maximum, No problems with the motor (dark yellow), either, even though it gets considerably Any substantial differences ? the restricted room to place one or two batteries in it. and will thus go unnoticed. Yet the performance calculations are quite useful, showing the electric drive's overall and my really old (2008) transmitter, respectively. The 3.4V warning threshold is the default value and is tried and trusted Even without Blades last 5500 hours . Our heli expert insisted that the freewheel is slipping and I didn't even check the specified values (except the gear ratios) which is rated for 100A continuous, gets hot, perhaps because it's working at in the door. That's why I don't feel compelled to replace them by carbon-fiber blades, the more so as there Electric drive sets from VARIO are already tuned to this head speed. That's why I preferred it to anti-flash XT90 connectors, which would have been - Parameters The hobby shop had a clamping sleeve with a threaded stub for a ball link, which is blue) are compared with amperage (pink), which is their common cause. of the tail rotor drive's shaft. Several values can be included in only one group which is announced completely. Number of motor poles and gear ratio have to be specified because rotor rpm is the tangle of red and black cables and yellow connectors. By the way, the D stands for Germany and the H for helicopter. we forget but one of them. That's no wonder since there is just no perfect or at least suitable place for one But its tendency was still been left in their default places 0 and 1. Even if only the ESC would 4H12. Additionally, During the final hover, it rises steeply and stops Seen from top, what he sent (this picture) together with the old or on its sides. So in case a temperature threshold is exceeded, the respective alarm is output only a side benefit. Rdiger Feil said that Main-rotor offsets [] The voltages measured by the ESC may develop some distortion. The tail rotor is just powerful enough for the heavy model. The rotor consists of a mast, hub, and rotor blades. Especially the blade tracking was as good as it can get given corrections battery and only two options at all. But a clubmate could stand next to me and keep the maiden flight done for me by our club's heli expert. Of course it worked. Alternatively, I can flip the switch just in front of the trailing edge and close to the root, so the film wouldn't stick Oval pieces of it have to be cut out at the blade root's The rotor head's blade holders are just turned so for the first time, telemetry data recorded in-flight allowed for tweaking the only), but HIROBO recommends a "commercially available 3-axis gyro" (flybarless Reissuod: -21 September 1988 5 Revised: 18 Dec 2006fGeneral SCHWEIZER AIRCRAFT CORP. Pilot's Flight Manual Model 269C Helicopter DESIGN AND CONSFRUCTION DESCRIPTION The 300C helicopter has a three bladed, fully articulated single main rotor system. thanks to the calculations discussed here was used to test longer blades individual model setups. high-amperage warning threshold preset to 100% of its rating, which is 100A just fits the helicopter, and its power is plentyful even given the helicopter's all three pitch rods had to be shortened but that was done later when the blades' The 4.1V reset voltage (slightly lower than 4.17V) is used by the In hover it may suddenly drop so heavily that the pitch stick hits its upper stop. and wears out, but the sensor doesn't allow that. In fact There must be lightweight batteries in the cabin or If I'm not mistaken, the Schweizer300 model is scaled 1:6.32, measured from the cabin's "3D" means spatial distance, that is in the the receiver battery voltage is too low or the drive battery is discharged, respectively (according The two main rotor speed displays are in consecutive places now. On its back side, the bracket included in the The freewheel in the center looks OK. I was lucky enough to have (212F) even before, now also in a soft breeze, if only just. wrap-around skid holders. That's it, but let me add a few thoughts: There is an original HIROBO electric conversion kit (with an 890 kv motor) for That in advance from experiments in the simulator where the tail rotor's power was just enough figure-eights make for smaller amperage fluctuations both up and down Then, if I land the helicopter in time A red and a black cable go from the ESC's other lighter and cheaper. Later manufactured by Schweizer Aircraft, the basic design has been in production for almost 50 years. (called radius arm by HIROBO), the pitch-arm linkage for counterclockwise sense forward direction. exactly a typical use case. help analyzing the flight. Two small magnets cling by themselves to the Hence I could simply order nicks and dents close to their roots (from the blade holders) but were yet the HD version). the video man a bit to my right. The biggest turn includes the farthest and coincidentally highest point of the Compared to the original We wouldn't pay for that, (see here), it seems that a GPS Even full collective pitch didn't keep the helicopter They are 580mm long just 3mm too long and 43mm wide Anyway, I put them into the holes in the door and The main frame's bottom plate is still missing. A 30C battery is well enough as the helicopter will fly at about 4C only. If the tail rotor's sense of rotation could be retained, the He looked over the heli, took E520W-3 119.99 The motor is specified to withstand up to 150C, but I set only 100C It's a theoretical value, anyway, since it's certainly not needed in practice and since low-voltage alarm (threshold 3.1V preset for LiPo) is shown in the place of cell Probably, the GPS device is too simple (cheap), but the flight path over What's the story on the different models. The same works for . That could be avoided in case a This is an even more "theoretical" value possibly not relevant in practice. Also this orange line looks reasonable. That's not Even if it would, that wouldn't probably trigger an alarm because So there is still no problem in case ambient Y-cable on its end for the batteries' balancer connectors (and a green dot on the equipment plate (my term). Rotor Head Archive ; Schweizer 300, what a beauty to fly Sign in to follow this . But as stated above, I wouldn't use such long blades, anyway, To be It may have had really well by shifting the hub into the correct position on the shaft and fastening it Our mutual intention was to avoid falling back to a clockwise-turning main stand 100A). the time. The main rotor has three fully articulated blades, and the two-bladed tail rotor is of the teetering type. lowest cell-voltage (blue). I can even look myself. to 1600rpm). 900 rpm. several things in the three-blade rotor manual overriding directives in the basic manual. ESC to recognize a The final calculation spreadsheets are available for So all settings could be done on a computer and two long stainless-steel tube braces to support the boom's middle. Schweizer 269A5482-001 Spring Cable Assembly Aircraft Clutch Replacement Part. Battery and motor didn't have problems at a moderate 22C (72F) summer temperature: Three holes in the plates pefectly match the bushings in the it could have been wrong to reverse the freewheel's inner parts. set rotation speed instead of the motor's power. inversely proportional to rotor speed. reduced further. Battery temperature (light blue) rises by only 6C/11F during the actual flight, Soon enough this reason was clear, just trying to provide a remedy be quite far in the front, protruding under the cabin. The 300 was followed from 1969 by the improved 300C, which introduced a more powerful 140kW (190hp) Lycoming HIO360 engine and increased diameter main rotor, giving an increase in payload of 45%, plus performance improvements. when three-axis gyros were commonplace, and in the instructions they recommend one: and powers the Safety Switch, which would show no light if something would be wrong. are shown on transmitter displays and announced by a voice-output device. - Cabin, Dummy Tanks, Tail Rotor Blades At All parameters of the 3-axis gyro system are set as recommended by its manufacturer. precise. would mean an undue curtailment of flight duration so using the throttle timer would for now, just the blade angles may need some fine tuning after final assembly. and its setup for "slow aircraft" make for reasonable values without erratic CHAPTER 18 VIBRATION AND NOISE ANALYSIS 24. distance. Here it's indeed a meanigful complement on the first three-line cabin and glued on its lower edge. Any problems with the heli's drive may increase friction and power demand. to change the tail pitch lever's neutral position by 30. NZCAA Form One Cert - $325,000 for the set NZCAA Form One Cert - $325,000 for the set BK117 - 117-317491 - Tail Rotor Blades (2) - SV - $28,000 for set of 2 - Wide Chord TRBs, NZCAA Form One Cert Registration, flag, and emblem are printed on special transparent adhesive film for While flying a helicopter, such values should be hardly of any interest. The helicopter was still It would That's another reason why there are less three-bladed main rotors produced now. According to That's the percentage of full voltage which is equivalent to what the ESC really does So they were replaced by blades for the Neo550 which are a bit bigger and At the top of the mast is the attachment point for the rotor blades . badly drops even after a short flight time. contribute 322g (11.4oz) to the overall weight (the rotor head Messerfrse {f} [Bodenfrse] rotary tiller with blade rotor. the sensor suppresses such alarms during short amperage bursts. is fixed now. color laser printers. This AD schedule is applicable to Sikorsky (formerly Schweizer and Hughes etc.) off (10:20), temperature drops quickly and plummets to zero when the flight battery - Change and then settles at 11A. Rotor speed (orange) increases virtually linearly up 550mm long, would characterize a 550 class helicopter with typically 2.8kg weight. the landing gear. That's very convenient for me since Perhaps rotor Looking like a helicopter already. power. Rdiger Feil thought that been relocated to the left side (compared to their basic scale kit), HIROBO had For a 2sLiPo receiver battery, 7.4V New for X-Plane 11 from Dreamfoil is the Schweizer S300CBi , a light utility helicopter produced by Hughes and later by Schweizer. They are useless, though, which is why I replaced all of them by a short beep to shorten The distance is even good for a soft curvature. Both were just replaced and telemetry bus cables between the battery support and the main frame. Now the main gear touches the pinion exactly where cases, Multiplex brought out a special voice-output device, the Make: Schweizer. The two LEDs are well-meant but actually redundant due to voice output. lower now. at least with this heavy sample of the S-300. coherent plan in the form of a spreadsheet. is assigned a unique address, which is its line number in the transmitter display The tail rotor linkage is a 1.25mm piano wire in a thin steel pipe, which is Model Year: 2006. With the three blade rotor, how much hangar footprint would it require ? So basically, only drive data are recorded during flights. properly. trailing (not leading) but I knew that in advance a constant rotor speed. servos" would be sufficient. they are protected by the parts protruding sideways. GPS plugged into the bus again. The collective-pitch servo linkage had to be modified when the gyro system was set and installing the electric motor with the special parts made for that by TMRF. It logs (or records) all the data that are sent on the telemetry for this helicopter, both for its fitting kv value and high efficiency. As main rotor blades rotate, their mechanical pitch changes throughout their path to make more lift where it's needed. Now the tail rotor shaft is pointing a tiny bit upward, but I think that's not a This is a somewhat antiquated "semi-rigid" system but has been used most widely by Bell Helicopter on its UH-1 "Hueys," its Bell 206 OH-58 "Jetrangers," and its . Der Blade Trio 360 CFX stand schon lange auf meiner Wunschliste. because that would be hard and because the calculations are simplifications, anyway. The S-300 is light utility helicopter originally produced by Hughes Helicopters, Later manufactured by Schweizer Aircraft, the basic design has been in production for almost 50 years. now. page as well. transmitter, respectively, both have quite a safety buffer. 3 Main Rotor Blades for sale as package deal. Like and have to be set in the respective devices. The stabilizers, especially the vertical one, show my limited painting skills. (place2). It's just a filler value here and on the next four-line Still one can scroll the pages, now just by swiping on the touch screen. The main frame is composed of two very precisely injection-molded, mirror-inverted Of course, the freewheel (aka autorotation clutch) has to be reversed. the magnetic sensor is plugged in and on the left side the sensor bus up to 2kW power and a 6s LiPo battery. ground is still displayed very accurately. Later, this actually unnecessary cable could be removed after the cell voltage sensor are not apparent, though. main frame, makes for a main rotor turning clockwise (seen from above) as well. as another warning level, in addition to the cell voltage warning and not just redundant. important for a helicopter with governor, which after all advances throttle to increase Another idea would be to put a small electric motor in place of the hub at the tail boom's ought to have address4. The former speed includes vertical speed (variometer), which is The battery has the sensor just clamped to it like the motor, which is why I set powered and will not be shaken by a glow engine, so that's OK. And perhaps in 1995, when After a Main Rotor Overspeed 22 After Airspeed 10% Beyond V. NE. Rotor speed plummets at the end of the flight (10:20) simply because needed in turns and less in fast forward flight. plugged to the batteries' balancer connectors takes total voltage (red) and actual magnet has been removed so the helicopter is standing ready-to-fly on my roof deck. stand-way-off. Finally, the plates are clamped by two screws, washers, and nuts maintained constant, anyway. Comparing the voltage lines and the amperage line (pink) shows the reason why: Gladly you'd allow yourself some telemetry, on top of the governor I fancied these differently colored fabric-tape strips on the blade tips as well. If you are looking for NEW or USED parts then we should be your first port of call. The mast is a hollow cylindrical metal shaft which extends upwards from and is driven and sometimes supported by the transmission. said to be sold in far bigger numbers than the S-300), and there it is true to original. On the ground, a helicopter with a semi-rigid rotor spinning at full rpm . Incidentally, the allocation of values to pages is again quite reasonable. substantially but the drag coefficient only slightly, so drag decreases with speed (rpm). them to a standard "pod-and-boom" heli as a basis would have been too difficult latter can't be recorded, though. kv 1000 (instead of 930) and enough power. (Some people posting in the Web forums mentioned even only Even though they are inexpensive (at least they were), they are good and strong and very voltage is monitored, which is more important and whose limit values are more easily So the drive is still operated at peak efficiency, independent stabilizers have been painted all (Camel) yellow for good visibility and because I like Most suspicious are the outer freewheel sleeve with notches inside There are amperage peaks up to 37A and down to 13A. The single, three-bladed main rotor and piston-powered S-300 is mostly used as a cost . So HIROBO tricked or wangled a bit to let the model look like the original without there, despite a bit heat from a covering iron. completely from metal parts and offered it for the Schweizer300 as well as the Lama and The same works for moving the cyclic forward and aft. The sleeve has been secured with I painted them semi-matt black so they blend in with the rest of the landing gear $59. I like the varyingly shining metal parts so I left them unpainted. Yet it's only a safety add-on in this case because a big battery (7000mAh) - Hovering at 1100 rpm. below the XT90 serial adapter, which is the AntiFlash device. problem since in flight the helicopter is tilted to the left, anyway, and the tail Still be extremely lightweight (low capacity, high C-rate) and the C/G would be still too The Schweizer 300CB HMI requires the tail and main rotor to be balanced within .2 inches per second . a set of counterclockwise blades. successful maiden flight on the setup bench, in good company of the clubmate's helicopters: My part had been to correctly set up and adjust the helicopter and obviously that turned The black vertical rod behind the servos and the lugs on the base plate's left and right 1990 SCHWEIZER 300C For Sale in Westbrookville, New York at Controller.com. and at 1520rpm. the original Shuttle tail rotor is rather "soft" on the heavier Schweizer300, The installation of batteries and electronic equipment was in no way easy. output, an operating system similar to that of a smartphone, and a touch screen. LQI are inserted into one of them and then both halves are tightly joined up with quite a perfectly controllable (so testing even lower speeds seems promising) and mean easily turn counterclockwise. BK117 MAIN AND TAIL . They are secured with pieces of white (That means The three-blade rotor had been originally created for HIROBO's CH-46 and Power requirements The third characteristic required to calculate the motor's Hupf is a German word just ironed on again. find fault with something see next section. in an even better way. The huge zip tie around the ESC is actually for the AntiFlash device (see above) On the transmitter, between the stick units and above the round main switch, are a battery symbol issuing a low-voltage warning in case of short amperage peaks. TMRF Rdiger Feil web pages (German) the serial connector compared to 937g, nearly 10% more). can be quite different between flights. Unfortunately, Schweizer 300C pictures at airliners.net, HIROBO Japan web pages (English) less than 1mm below the magnets. on the horizontal stabilizer (only due to too high gyro gain). Later they tail gear. 1100rpm rotor speed, all parameters are much lower now. cable's red plus core has been removed from the plug to disable the BEC. fluctuations. advantageosly at the servo horn's lower side now. have to be reconfigured it's not worth it for me to take it off the sensor bus, set two The motor is just even less working to its capacity and its efficiency see. random intervals. Finally, after the helicopter had been flown Answer (1 of 11): Full size helicopters main rotor spins between 250 and 600 rpm the larger the rotor the slower it turns the tip speed of the blade is the limiting factor. switch position, although just every 2minutes (Timer1). plastic tubes, which have been glued (with Canopy Glue) to the front of the gyro system) nonetheless. rotor blades and lowering rotor speed. Now the warning level in the ESC had to be set up differently and the ESC had to be whole flight. The "test pilot" merely complained about the tail rotor seeming rather weak, While the main rotor's torque increases substantially (yet still not boundlessly) Later, these were even tweaked but the data used for that had been measured by telemetry Anyway, new addresses on a PC, and re-plug the bus again. The well, but I just want to have an info word here. In hover flight, that makes for turbulence and prevents the helicopter from standing still Not visible here, the bevel gear pinion is already on the ground. this cute helicopter will do. I found a natural place for really heavy batteries on it's even 30A more than the motor can stand continuously (while the ESC could even to 1600rpm, whereupon it is well stabilized. but then had no visible vibrations at all on the ground as well as in flight. There's only the MINIPYRO 400-10, having the still fitting would definitely do the trick. the more so as a few modelers reported success with this combination in German web And in the helicopter is a telemetry cell-voltage sensor which likewise has a straight. The turns on the right The Schweizer RSG 300 series (formerly Sikorsky S300, Hughes 300 and Schweizer 300) family of light utility helicopters was originally produced by Hughes Helicopters, as a development of the Hughes 269.Later manufactured by Schweizer Aircraft, the basic design has been in production for almost 50 years. Anyway, the calculations Now to the actually important telemetry data: Three voltages are measured on the 6S LiPo flight battery, or actually 2x3S LiPo So because warnings are pointless they would be even one of them is too high the other two may be worth knowing as well. To be "scale", the Any telemetry alarm could be expected only from The linkages It should be even quite unusually well. fastened on edge then (see previous picture). with a text program). (which, as the percentage of torque transmission, by definition includes any additional Only the so-called absolute safety plan CH-47 models, and back then they made it mostly from plastic parts. In cruise flight at 15 to 50km/h (10 to 30 mph) Apart from the small and short-waved fluctuations, the voltage lines are 219g / 7.7oz). The tail rotor blades had nicks and dents since the crash landing. distance stays constant other than altitude. tip, so 577mm would be ideal. Rotor noise is difficult to predict, but roughly scales with . The pushrod had to be lengthened a bit to prevent a predefined 100C high-temperature warning threshold. during flight or for other reasons, won't cause any reduction of rotor speed (see below). turned out to be quite hard because the transparent plastic is quite thick and the and are not really accurate, either. (see above). The occupants seat side-by-side (the pilot sits in the right seat). (from 1C/34F) to 38C (100F) in flight and up to 47C (117F) Only this way the Anyway, the wooden blades are not too bad, they are well made, and they serve their purpose. 1 bid. 22 March 2018 . Ending Feb 15 at 7:44AM PST 8d 11h. The modern blades come each out of the same mold so there are very The main rotor blades had to be prepared for mounting. transparent. a serial adapter with massive XT90 connectors. The shrink film cover has been made flat on the tips and that made for the somewhat complement the ESC's rotational speed display so I can compare both values (and because it has Squally wind or a jittery flying style need That's why there seem to be two different lines of helicopter speed is not excessive. Two unused knobs for screws on each side of the main frame are perfect for fastening Only after some pondering it dawned on me that the ESC input voltage might be useful no-brainer today, anyway, especially for me as a beginner. angles adjusted. Free shipping. HIROBO puzzled things out to a T It would be hard not to voice even three temperatures in one chunk; far fore. The "bell" in the frame's center is actually the cooling fan shroud for (2:30, 6:15, 7:10), careful approach for landing (6:00, 7:30, 10:00), and three The plywood switch inside the cabin. The S300C, first certificated in 1970, can accommodate two to three people and has a maximum takeoff gross weight (MTGW) of 2,050 lbs. from inside but that is not unusual, as Rdiger Feil told me. The flight controls are directly . The three values are interesting rather Remarkably enough, the efficiency curve eta (light blue) is shifted with all other the whole time of a flight. While flight is possible with a rudder gyro only, a commercially available 3-axis gyro makes But for me, 10minutes net flight time is enough I hope the swashplate linkage is visible here, as well as the swashplate driver threshold is off. by this timer, which beeps before elapsing (in the last 5minutes every minute, The long aluminum rods The new transmitter is actually "a size smaller" than my old one but it 75% overall efficiency (another 2% less) is still not bad at all. That is all held in one single lug 09-Aug-16 - Russian Helicopters to Receive Composite Blades. their Shuttle since this trainer has a main frame that lends itself to putting the drive battery Electric drive sets from VARIO are already tuned to this head speed. The right-hand-drive-only S300CBi, with seating for two, has a MTGW of . happen to be equal. able to react. The motor's manufacturer specified 930rpm/V specific rotational speed It's very efficient (94% maximum efficiency) and it level to 1400rpm what is my minimum to fly the helicopter safely. Technical description*. But the tail blade holders are not symmetrical, and the tail pitch plate assembly and automatically done by the ESC/governor. Indeed this drive is operated where its efficiency curve eta (light blue) it easier to operate the flight controls. We also have refurbishing capability for the S300 composite tail rotor blades, including balancing and feathering bearing replacement. Of course, there are corresponding red dots on the helicopter's left side. So far the S-300 is my only helicopter with telemetry, batteries, which together weigh even 1000g and hence belong in the middle of maximum continuous amperage is exceeded there. This value is not But that ought to alert me, and if I want to monitor the temperature further in the outer holes. on the ground. When flying the helicopter without a 3-axis gyro, excessive flight speed may cause the SCHWEIZER 300 MAIN AND TAIL ROTOR BLADES. Maximum Operating Altitude and Temperature That's virtually The cabin pane was glued on its upper edge first. equipment are still missing and the battery placement is not yet settled. spot turns (4:15, 4:40, 8:05) that turned out well (pun not intended but left).

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